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. 2022 Oct 5;13:5870. doi: 10.1038/s41467-022-33460-0

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© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — Diagram showing the total number of patients from emergency and the infectious diseases wards tested with either a molecular or antigen diagnostic test and with both molecular and antigen tests in the period from 15 September to 16 October 2020. Subjects who underwent either antigen or molecular are further subdivided into the corresponding test group with test results. Subjects who underwent both tests are further arranged in four groups according to test result concordance (molecular –/+ antigen –/+). Subjects under 20 were excluded from the hospital surveillance study.